Decide whether the compound is ionic or molecular, if you can. Compound is a hard grayish-white solid. A small sample of it is put into a quartz tube and heated strongly. It starts to melt at 1055°C.

Ionic solid

Explanation:

Ionic solids are known to be hard solids. They do not conduct electricity in the solid state, however the solution of the solid or it's melt conducts electricity.

Ionic solids have a very high melting point due to strong ion-ion interaction. Hence the high melting point of this solid.

i think it is true since you can test the answer and can use observations to complete it.